Reliability of Latvian Power System’S 330 KV Substations

Abstract

Substation reliability is always a topical problem. The authors consider the techniques for reliability calculation based on logical-probabilistic approach to the evaluation of electrical substation switchgear schemes and equipment at emergency situations with disconnections of individual elements of the substation equipment or false operation of relay protection and automation devices. Based on the reliability analysis made for the 330kV substations of Latvian Electric Power System, recommendations are given concerning the reconstruction of switchgear schemes for some substations.

Evaluation of Latvian Power System Static Stability According to a New Development Strategy until 2025

“…It should be noted that many scientific articles and monographs are devoted to the problem of calculating the stationary modes of an EPS [15,[39][40][41][42][43][44][45]. IEEE test schemes [46][47][48][49][50][51] are often used for testing, comparing, and demonstrating methods for solving problems of analysis and modeling the static modes of various power systems. In this paper, the authors use the EPS model, which approximates real conditions, partially reflecting the situation in the EPS of the Baltic States [11,[52][53][54][55][56][57].…”